docs: def wanted_labels(self, labels):
          """
          Specify only WANTED labels to minimize get_labels() requests
  
          Args:
          - labels: <list> of wanted labels.
  
          Example:
            page.wanted_labels(['P18', 'P31'])
          """
          if not isinstance(labels, list):
              raise ValueError("Input labels must be a list.")
  
          self.user_labels = labels